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Samsung WF50K7500AV/A2, Service Manual

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Samsung WF50K7500AV/A2 Service Manual Download Page 15

Removal and Reassembly _ 13

Part

Figure

Description

Disassembling and
Repairing the Water
Level Sensor
-Upper washer

1.  Disassemble COVER-T.C.

2.  Remove the level sensor from the assembly.

3.  Remove Clamp as shown in the picture and 

remove hose.

Disassembling and
Repairing the Water
Level Sensor
-Lower washer

1.  Remove FRAME FRONT.

2.  Press the Hook part as shown to separate It 

from the FRAME PLATE.

3.  Remove the Clamp as shown Separate hose.

Summary of Contents for WF50K7500AV/A2

Page 1: ...DING WASHER Basic Model WF50K7500AV A2 WF7500K Model Name WV60M9900AV WV9900M Model Code WV60M9900AV A5 WV9900M 1 Safety Instructions 2 Features and Specifications 3 Disassembly and Reassembly 4 Troubleshooting 5 PCB Diagram 6 Wiring Diagram 7 Reference ...

Page 2: ...10 4 Troubleshooting 29 4 1 Error modes 29 4 2 Test Modes 34 4 3 Corrective actions for each error code 35 5 PCB diagram 43 5 1 MAIN PCB 43 5 2 Circuit diagrams of main parts for main PBA 44 5 3 INVERTER PCB 45 5 4 Circuit diagrams of main parts for inverter PBA 46 5 5 DISPLAY PCB 47 5 6 Circuit diagrams of main parts for display PBA 48 5 7 Upperwasher MAIN PCB 49 5 8 Circuit diagrams of main part...

Page 3: ...o disconnect the power plug before servicing Failing to do so may result in a risk of electric shock Do not allow consumers to connect several appliances to a single power outlet at the same time There is a risk of fire due to overheating When removing the power cord make sure to hold the power plug when pulling the plug from the outlet Failing to do so may damage the plug and result in fire or el...

Page 4: ... not press a control button using a sharp tool or object This may result in electric shock or damage to the product WHILE SERVICING When wiring a harness make sure to seal it completely so no liquid can enter Make sure that they do not break when force is exerted Check if there is any residue that shows that liquid entered the electric parts or harnesses If any liquid has entered into a part repla...

Page 5: ...ectric leakage AFTER SERVICING Check the wiring Ensure that no wire touches a rotating part or a sharpened part of the electrical harness Check for any water leakage Perform a test run for the washing machine course and check whether there is any water leakage through the floor section or the pipes Do not allow consumers to repair or service any part of the washing machine themselves This may resu...

Page 6: ...tlet and measure the insulation resistance between the power plug and the grounding wire of the washing machine The value must be greater than 10MΩ when measured with a 500V DC Megger Check whether the washing machine is level the floorwith respect to the original position of the washing machine prior to service By doing this now will reduce for the need of customer dissatisfaction and redo call V...

Page 7: ...an water and soap VRTplus Vibration Reduction Technology Innovative VRT Plus technology reduces noise and vibration during washes It keeps the drum evenly balanced even at high spin speeds and regardless of load size So you can do your laundry anywhere and anytime Deep Steam The Deep Steam feature boosts cleaning performance and loosens grime and dirt thus providing superior cleaning results Self ...

Page 8: ...ht top doorclosed 46 9 in 1190 mm B Height top dooropened 61 in 1550 mm C Width 27 in 686 mm D Depth with dooropen 54 6 in 1386 mm E Depth 34 in 864 mm Waterpressure psi kPa 20 116 137 800 NETweight lb kg 308 6 140 Spin revolution Upperwasher 800 rpm Lowerwasher 1300 rpm Heaterrating Washing and heating 120 V 900 W A B C D E ...

Page 9: ...X1090 750 x 915 x1305 Weight kg Net 108 140 Gross 111 144 Loading Quantity 40ft H C Set 78 75 BodyColor Black Caviar Black Caviar Front Deco Strip Chrome Chrome DoorTrim Outer Add Door TOC General Door IMEF cu ft kWh cycle 2 92 1 15 2 92 IWF gal cycle cu ft 2 9 12 2 9 EnergyGuide kWh year 105kWh year 60kWh year 105kWh year Features PowerFoam WaterShot Smart Control Smart Care Diagnosis Digital Inv...

Page 10: ...lt CAP FIXER DC67 00307A 9 Default HOSE HANGER DC62 10278A 2 Default CABLE TIE 6501 000121 1 Default CASE DETERGENT DC61 04468A 1 Default Note Customer can purchase additional water supply and drain hoses from a service center The spanner wrench water supply and drain hoses are not supplied Both the water supply and drain hoses are supplied during the installation ...

Page 11: ... Motor 1 Balance 5 2 holes of each left and right of the shock absorber1 Pulley hole Open End wrench 10mm 13mm 19mm Replaceable for the box driver Since the bolt runs idle when the box driver is used use the box driver17mm Vice pliers Tool to protect the idle and abrasion of the bolt for the box driver Others Driver Nipper Long nose General tools for the after service ...

Page 12: ...ce removing the rotor requires a lot of strength due to the magnetic force of the Rotor and it may come off suddenly your hand or arm may be injured by the edge of the Stator or Frame Therefore take precaution when separating it You can separate the connector by pressing Motorwire Hall sensor 4 Separate the MotorWire and Hall Sensor while pressing the navel of the Housing Take precaution when you ...

Page 13: ...ing the navel of the Housing 3 Pull the Assy Thermistor from Tub Back When disassembling Assy Thermistor leave the rubber packing CAUTION OK NG OK NG Gap 1 When assembling Assy Thermistor push to the end If assembling like NG picture water leakage possibility is high 2 When assembling and disassembling Assy Thermistor rubber Packing should be checked If the gap existed between rubber packing and t...

Page 14: ...C 2 Grab the hook and lift it up 3 It is easily disassembled when lifted at the same time as LID T C Disassembling and Repairing the Water SupplyValve 1 Disconnect the connector connected to the Wavervalve Open the lid and remove the connector connected to EMI FILTER 2 Remove 9 SCREW 3 Use the tool to remove 6 points of the clip and separate the watervalve ...

Page 15: ...1 Disassemble COVER T C 2 Remove the level sensor from the assembly 3 Remove Clamp as shown in the picture and remove hose Disassembling and Repairing the Water Level Sensor Lowerwasher 1 Remove FRAME FRONT 2 Press the Hook part as shown to separate It from the FRAME PLATE 3 Remove the Clamp as shown Separate hose ...

Page 16: ...ve 2 screws on each side 2 Lift the door up with both hands and remove it 3 Remove the Assy lid t c low after separating Frame and Assy lid t c assembly hook using a flat screwdriver as shown in the figure 4 Remove the cover detergent cover rinse by lifting up as shown 5 Using the driver as shownRemove cover top fron ...

Page 17: ...el separation 2 After removing the screw pull the panel forward and remove it 3 Disconnect the connector as shown Disassembling the COVER TOP DECO 1 Remove cover rinse and cover detergent with driver 2 Remove hose and cover detergent after removing clamp as shown 3 Lift up the cover top as shown in the figure ...

Page 18: ...t rightwards 3 Remove the 2 screw and 2 Connectors for separating Guide Wire T 4 Push the TUB upside to separate ASSY PCB MAIN and separate the ASSY PCB MAIN lifting it up 5 Separate the 4 Hooks 6 Disconnect All Connectors on main PBA Lift up Main PBA Change SVC Part After SVC Certainly check the all Hooks on COVER PCB M Otherwise COVER PCB M will be disassembled during washing machine running ...

Page 19: ...Remove the 2 hexagonal screw holding the hinge door 2 Putting and pressing hard a flat head screwdriver or into the furrow between COVER FILTER and FRAME FRONT and then pull it towards to open the COVER FILTER 3 Remove the screw holding the cover filter 5 Separate the Connector of assy wire harness ...

Page 20: ...g along the circle 2 Remove the 2 screws to separate the DOOR LOCK S W 3 Remove the 5 screws at the top of FRAME FRONT 4 Push the lever and pull it towards to open the COVER FILTER 5 Separate the remaining WATER REMOVAL HOSE BLUE from the hook 6 Remove the 2 screw down under Frame Front 7 Press the UPPER PLATE slightly with the screwdriver to separate the FRAME FRONT ...

Page 21: ... of the hose connected to the PUMP and then pull the HOSE AIR 4 Separate the Clamp of the hose connected to the PUMP and then pull the HOSE DRAIN 5 Separate the wire connected to the PUMP Removing the Remaining Water 1 If the washing machine works drain the water in the wash tub by selecting the Spin course If the washing machine does not work remove the laundry from the wash tub and scoop the rem...

Page 22: ...e 3 screws and detach Door lock s w 3 Tilt the set slightly backwardsRemove two screws at the bottom 4 Remove 4 screws at the top of the frame front 5 Use the tool to detach the two hooks then move the frame front forward Pull it off 6 Remove 9 screws and disassemble by pulling the part forward 7 Remove the four screws and pull the part forward to remove it ...

Page 23: ...rward to remove it 9 For top frame right disassembly remove the three parts of SCREW on the upper left side of the rear panel 10 Remove 3 Screws on the back 11 Remove 3 screws inside Frame Right 12 Lift the upper assy cover top slightly then remove the hook using a screwdriver and remove the part 13 Separate in the same direction as the picture ...

Page 24: ...e tool to remove clamp and separate hose 16 Separate the assembly screws of detergent and rinse cups 17 Remove three screws on each side of the left and right sides 18 Drain hose assembly area screw included Separate 3 Screws 19 Left Earth wire assembly screw included Remove 2 Screws 20 Lift the upper assy and remove the clamp to separate the hose ...

Page 25: ... 21 Remove 3 Screws 22 Remove the clamp first to separate the hose connected to the pump drain CAUTION When removing the hose please be careful because residual water may come out 23 Use the tool to remove the wire bundles assembled into the frame 24 Remove the four screws and lift up the assy basket ...

Page 26: ...eassembly Part Figure Description Disassembling and Repairing the Damper Upperwasher 1 Disassemble 4 screws 2 Lift up ASSY BASKER andDAMPER at the same time 3 Remove the damper by lifting It up Separate from CORNER FRAME ...

Page 27: ...ll it towards with caution 2 Remove the 4 bolts fixing DAMPER to take ASSY TUB out 3 Remove all wire and hose connected the ASSY TUB 4 Open the cap of SPRING HANGER to take ASSY TUB out 5 Lift the ASSY TUB with two people carefully with holding SPRING HANGER 6 Remove the M10 bolt from the middle of the TUB and separate the TUB FRONT and TUB BACK ...

Page 28: ...ward after releasing the nut If the Heater is damaged it may cause a problem Therefore unfasten the nut using spanner or wrench manually without using pincers or tweezers When you re assembly the heater make sure to install the Heater exactly onto the Bracket inside the Tub If it is not properly installed it may cause a fire In addition completely insert the packing part into the Tub when assembli...

Page 29: ...iption Disassembling the MEMS Sensor 1 Remove HOLDER and disconnect HOSE 2 Disconnect the connector 3 To facilitate disassembly of the MEMS SENSOR pull the tub toward the front as shown in the picture 4 Remove two screws and detach the MEMS sensor ...

Page 30: ...Figure Description Disassembling the COVER TUB 1 Remove 6 Screws 2 Use a screwdriver to detach the 5 hooks and lift up the Cover Tub Disassembling the BLDC MOTOR 1 Separate one bolt and open COVER 2 Remove connector and remove 6 bolts ...

Page 31: ...roverloaded due to too much laundry Non sensing The motor hall sensorterminal is not connected PBA fault The motor driving errorfrom the PBA is weak Unstable relay operation etc This occurs due to erroneous operating signals from the motor hall sensor The IPM terminal of the main PBA is not connected The DD motor cover is out of place The PCB housing terminal is not connected PBA fault DD motorfau...

Page 32: ...and observe the washing machine s operation carefully Check the voltages An error occurs when under or overvoltage is supplied Check whether a plug receptacle is used When the connecting wire is1m a momentary lowvoltage may drop up to10 V Main PBA fault sometimes Communication Error 1 AC AC The signals between the sub and main PBAs are not sensed because of commuication error Check the connector c...

Page 33: ...2 A switch is jammed or stuck due to be pressed unevenly due to deformation of the control panel or button This error may occurwhen the screws that hold the sub PBA in place are tightened too much A button otherthan the Power button is continually pressed for more than 30 seconds Deformation of an internal plastic injection part A screw for assembling the sub PBA is tightened too much DoorError 1 ...

Page 34: ...cause the connecting hose to the detergent drawer is connected incorrectly The drain pump filter cover is engaged incorrectly Water leakage occurs at the drain hose The duct condensing holding screws are worn The nozzle diaphragm is engaged in the opposite direction orthe rubberpackaging is omitted Water leakage occurs because the screws that hold the tub back and front in place are fastened incor...

Page 35: ...ure of the motor driver in the inverter PBA is high Check the inverter PBA Unbalance Error 1 UB UB As laundry causes this error check the laundry Find the reason forthe unbalance and solve it as directed in the user manual Foaming Detected 1SUD SUD This occurs when too much foaming is detected It is also displayed while foaming is removed When the removal is finished the normal cycle proceeds Sud ...

Page 36: ...ion of dehydration 3 carryouttestforoperation of preparatoryvalve 9 carryout test foroperation of drying heaterand drying fan Co carryouttestforoperation of coldwatervalve 10 carryout test foroperation of machine door Ho carryouttestforoperation of hotwatervalve OK Ot Automatic mode of Smart Install is completed normally 6 carryouttestforoperation ofwatershotvalve carryouttestforoperation ofwashin...

Page 37: ...ctor are connected Checking Part Pink Color Wire Orange Color Wire Frequency Approx 25 3 KHz with no load Washing Motor Error and Hall Sensor Error 3C Washing motor fault Washing motor hall sensor fault Incorrect connections of the washing motor hall sensor connector Washing motor rotor and stator fault Main PCB fault Check the motor connector terminal connections and contacts 3C is displayed beca...

Page 38: ... material Check the motor Winding Coil Plug out the connector and read resistances at any two of the three terminals on Motor Should be 7 6 8 4Ω at 25 C Water Supply Error 1 4C 4C Water supply value fault Main PCB fault Freezing in the winter season If the water supply valve has a wire disconnected replace it Check whether the water supply valve is clogged with foreign material and whether water i...

Page 39: ...move as directed Check the wire connectors on Main PCB and Drain Pump ASSY The connector or wire may have poor physical connection Check the drain pump resistance Drain Upper Washer Check the drain pump resistance Drain 13Ω 16 5Ω Drain Bubble Lower Washer Check the drain pump resistance Drain 13Ω 16 5Ω Bubble 40Ω 50Ω Communication Error 1 AC AC The signals between the sub and main PBAs are not sen...

Page 40: ...t Reed SW fault Main PCB fault Check the Door Lock SW terminal connections and contacts Bring the probe of tester into contact with two terminals of Door Lock SW DC Error In state of Door Close Check Reed SW Resistance DC1 Error In state of Door Lock Unlock Check Motor Resistance And In state of Door Lock Unlock Check Door Lock Unlock Contact Resistance If Resistance is satisfied with Spec Replace...

Page 41: ...ance when you press the switch button The resistance of 2 pin Must be approximately 0 0 3Ω Heater Error HC HC1 Disconnection wire Heater falut Wash thermistor fault Check for connection between wire and heater If wash heater is faulty replace it Refer the TYPE 1 If it is not problem in heater replace wash thermistor Refer the TYPE 2 FRONT A B TYPE 1 Check the resistance between A and B It should b...

Page 42: ...ired action Check the drain motor operation Replace if it does not operate normally PUMP TYPE Check for any leakage on the base Hose Valve and Tub connections 1LC1 LC1 Check for any leakage Check that the detergent softener bleach has overflowed the detergent case Check if the exterior of washer is cleaned with water Check the drain hose Make sure the end of the drain hose is placed on the floor M...

Page 43: ...nnected to the water level sensor Check whether the hose is folded cut or damaged Temperature Sensor Error 1TC1 TC1 Washing temperature sensor fault Main PCB fault Freezing in the winter season Check the connections for the washing heater temperature sensor connector If the washing heater temperature sensor has a functional error replace it First check the thermistor type And The resistance of the...

Page 44: ...her Unbalance Error 1 UB UB Motor hall sensor fault Caused by the laundry contents Check the type of laundry Check whether they may cause an unbalanced situat ion Educate the consumer in this case is to press pause reposition the load or remove a few items Press start to continue and complete the wash cycle ...

Page 45: ...1 AC load connector The port to supply power for each AC load Location Part No Function Description 7 CN804 DISPLAY and INVERTE PBA communication Supply power and communicate with the display and Inverter PBA 8 CN803 Upperwasher PBA communication Supply power and communicate with upperwasher PBA 9 CN501 Sensor connector Sensing of door open close water temp and water level 10 CN502 MEMS communicat...

Page 46: ...4 DOOR_LOCK 5 THERMO_ACTUATOR 6 COLD_VALVE 7 HOT_VALVE 8 BLEACH_VALVE 9 SOFTNER_VALVE 10 WATER_SHOT PIN Location 10 9 8 7 6 5 4 3 2 1 CNP101 2 LI_IN CNP102 1 D_LOCK UNLOCK CN304 1 12V 3 DRUM_LIGHT CN802 1 5V 2 RX_SMART_TEST 3 TX_SMART_TEST 4 GND 5 MODE0 CN502 1 3 3V 2 CS1 4 SDO 5 SPI 6 SPC 7 GND CN501 1 GND 2 DOOR_SW 6 WATER_LV_OUT_FWM 7 WATER_LV_IN_FWM 8 WATER_LV_OUT_OWM 9 WATER_LV_IN_OWM CN803 1...

Page 47: ...mmunication with MAIN 2 CN2 Hall Sensor Sensing Hall signal 3 CN6 Motor Output MOTOR 3 Phase Output 4 CN5 AC Power Source Supply AC Power 5 CN4 JTAG Connector Debugging connector Deleted in massproduction 6 CN3 Flash Writing Port Writing Flash memory 5 6 4 3 2 1 5 3 INVERTER PCB ...

Page 48: ...sor signal 3 HALL B sensor signal 4 Ground CN6 1 Motor signal U 2 Motor signal V 3 Motor signal W CN5 1 L line 2 N line CN4 1 5V 2 Reset signal 3 nTRST signal 4 TDI signal 5 TDO signal 6 TCK signal 7 TMs signal 8 Ground CN1 1 MAIN Communications signal 2 MAIN Communications signal 3 Ground ...

Page 49: ...power and communicate with Mems sensor 2 CN801 MAIN PBA communication Supply power and communicate with MAIN PBA 3 CN802 Wi Fi communication Supply power and communicate with Wi Fi 4 CN401 Touch communication Supply power and communicate with Touch 5 CN201 Flash Writing Port writing Flash memory 1 2 3 5 4 ...

Page 50: ...PLAY PBA CN501 1 3 3V_MEMS 2 SPC 3 SDI 4 SDO 5 GND 6 CSI CN401 1 12V 2 GND 3 TOUCH_SDA 4 TOUCH_SCL 5 5V 6 POWER_KEY_1 7 POWER_KEY_2 CN802 1 5V 2 RX_SMART_TEST 3 TX_SMART_TEST 4 GND 5 MODE0 CN801 1 TX_MAIN 2 RX_MAIN 4 5V 5 GND 6 12V 8 POWER_KEY_1 9 POWER_KET_2 ...

Page 51: ...d connector The port to supply power for each AC load 4 CN803 Front washer PBA communication Communicate with Front washer PBA 5 CN404 DC DoorLcok onnector Control the DC DoorLock open close 6 CN501 Sensing Connector Sensing of water temp and Inner door Open Close 7 CN202 Flash Writing Port writing Flash memory MAIN 8 CN902 Flash Writing Port writing Flash memory INVETER 1 2 3 5 6 7 8 4 11 12 ...

Page 52: ...C MOTOR 2 DC MOTOR 3 DOOR LOCK SIGNAL 4 5V 5 REED 6 DOOR UNLOCK SIGNAL CN501 1 GND 2 INNER DOOR S W 3 WATER TEMP 13 12V 14 HEATER 15 GND CN801 1 WATER_LEVER 2 INNER DOOR S W 3 RX_FROM_FWM 4 TX_TO_FWM 7 GND CN902 1 5V 2 RXD_INV 3 TXD_INV 4 GND 7 BOOT CN202 1 5V 2 RXD_MAIN 3 TXD_MAIN 5 GND 6 BOOT CN801 1 MOTOR W 2 MOTOR V 3 MOTOR U CN101 1 AC N 2 AC N 1 CN101 1 AC L 2 AC L 1 ...

Page 53: ...F REACTOR INFO 1 2 A V VL 50 60 Hz AC 8 0A REACTOR Remarks InpuT Lead No orcolor Rated Current 1 2 WHT WHT 1 2 WHT WHT AC 8 0A 1 2 WHT WHT AC 8 0A WINDING ORDER SYMBOL TERMINAL NO WIRE TURNS WINDING METHOD REMARKS W1 L1 S F PEW1 4φ 54 SOLENOID ...

Page 54: ...52 _ Wiring Diagram 6 WIRING DIAGRAM 6 1 WIRING DIAGRAM_ WV60M9900A ...

Page 55: ...3 3kg 26 21 3kg 24 19 3kg 22 17 3kg 20 1 Entry 2 Entry 3 Entry 4 Mid 5 Mid 6 Mid 7 High 8 High 9 High Region orType A N America L L America E Euro R CIS M M E Asia F Africa S S E Asia H India C China J Japan K Korea G Global 9 Best 6 Better F 13year H 14year J 15year K 16year M 17year BuyerCode Color W WHITE G Gray S SILVER V Black Z Blue Sapphire ...

Page 56: ...ervice Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law 2017 Samsung Electronics Co Ltd All rights reserved ...

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